( note: I've have worked on all of the above platforms ( bold ) with regards to ipv6 and they don't always support dynamic routing for IPv6, and might lack RIP-ng or OSPFv3 , they also might be very restrictive , base on software such as support for DHCPv6 server )

With the big push for IPv6 ready gear and IPv6 migrations, the vendors are slowly catching up and moving forward.